2008/05/04 by M. Saffman, K. Molmer · 1 citation
Physics and Astronomy · #quant-ph #physics.atom-ph
paper · pdf · doi:10.1103/physreva.78.012336
published as Phys. Rev. A 78, 012336 (2008) · 6 figures
arxiv created 2008/05/04 · arxiv updated 2011/11/08
We discuss a method for scaling a neutral atom Rydberg gate quantum processor to a large number of qubits. Limits are derived showing that the number of qubits that can be directly connected by entangling gates with errors at the 10-3 level using long range Rydberg interactions between sites in an optical lattice, without mechanical motion or swap chains, is about 500 in two dimensions and 7500 in three dimensions. A scaling factor of 60 at a smaller number of sites can be obtained using collective register encoding in the hyperfine ground states of the rare earth atom Holmium. We present a detailed analysis of operation of the 60 qubit register in Holmium. Combining a lattice of multi-qubit ensembles with collective encoding results in a feasible design for a 1000 qubit fully connected quantum processor.